C12.21-2/NE,C12.3-2/EWSR,C12.4-2/EWSR,C12.5-2/EWSR,弯角形单端预注I/O连接器-M12孔端(F) C12.21-2/NE,C12.3-2/EWSR,C12.4-2/EWSR,C12.5-2/EWSR 无锡市昌林自动化科技有限公司